1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bija089 [108]
3 years ago
12

Which of the following tools is a wheel and axle

Chemistry
2 answers:
m_a_m_a [10]3 years ago
8 0
Hello there!

Let's first consider. A wheel and axle would consists of when to parts, of ever more, would do a certain thing, and then change it. 

So, when looking at your options above, I would consider the option of "the man turning the door nob". The reason to why this would be the answer would be because in the door nob, they're two or more materials that would together do something, to either shut the door, and to close it also.

Your answer: "the man opening/closing the door".

I hope this helps you!
oksano4ka [1.4K]3 years ago
4 0
I believe the very last one!
Happy to help.
~Brooke❤️
You might be interested in
A sports car and a fully loaded semi truck pull side by side at a red light. Using your knowledge of acceleration, predict which
Len [333]
According to Newtons second law of motion:

a =  \frac{F}{m}

This shows, acceleration and mass are inversely proportional. So, larger the mass, less will be the acceleration produced and vice versa.

In case of a sports car and a fully loaded truck, the mass of truck is a lot more than the sports car. As a result the sports car will accelerate faster when the traffic light turns green.
7 0
3 years ago
Pls help me my mom won’t stop yelling at me Bc have missing assignments
victus00 [196]
IT SHALL BE C B)!!!!
8 0
2 years ago
Solve fasttt<br><br> C7H17+O2=CO2+H2O<br><br> Balancing Equations
sertanlavr [38]

Answer:

The answer to your question is

                                        4C₇H₁₇  + 45 O₂    ⇒   28 CO₂   +  34H₂O  

Explanation:

Write the equation

                                        C₇H₁₇  +    O₂    ⇒    CO₂   +    H₂O  

Process

1.- Check if the equation is balanced

                                 Reactants            Element              Products

                                        7                          C                           1

                                       17                          H                          2

                                        2                          O                          3

As the number of reactants and products is different, we conclude that the reaction is unbalanced.

2.- Write a coefficient "7" to CO₂   and a coefficient of 17/2 to H₂O

                                      C₇H₁₇  +    O₂    ⇒   7CO₂   +  \frac{17}{2}H₂O  

                                 Reactants            Element              Products

                                        7                          C                           7

                                       17                          H                          17

                                        2                          O                          51/2

3.- Write a coefficient of 45/2 to the O₂, and multiply all the equation by 2.

                         4C₇H₁₇  + 45 O₂    ⇒   28 CO₂   +  34H₂O  

                  Reactants            Element              Products

                        28                          C                        28

                        68                          H                        68

                        90                          O                        90

5 0
3 years ago
Chemists can use moles to calculate: A. How much of the products are needed and how much reactant will be made. B. How much prod
damaskus [11]

Answer:

c.- How much of the reactants are needed and how much product will made.

Explanation:

The moles is the matter unit used in chemistry to simplify  some calculations, instead of using grams. Also the moles are very useful because the chemical reaction can be balanced.

When a Chemical reaction is balanced, then it can be easily to calculate how many moles are necessary to add in a process to obtain a quantity of grams of a product.

5 0
3 years ago
What direction do the plates have to move in order for an earthquake to occur?
Bess [88]
they would be pushing together
4 0
3 years ago
Read 2 more answers
Other questions:
  • The decomposition of dinitrogen tetraoxide into nitrogen gas and oxygen gas is shown by which balanced chemical equation?
    7·1 answer
  • Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pr
    6·1 answer
  • The purpose of the salt bridge in an electrochemical cell is to ________. Question 10 options: provide oxygen to facilitate oxid
    12·1 answer
  • For each of the following unbalanced equations, calculate how many grams of each product would be produced by complete reaction
    5·1 answer
  • A solution of the weak acid HF and a solution of the strong acid HCl have the same pH. Which solution will require the most sodi
    15·1 answer
  • PLSSS HELP MEE<br><br><br>CH3COOH + Mg<br>CH3-COOH+MgO<br>CH3 -COOH + Mg(OH)2<br>CH3-COOH + MgCO3​
    11·1 answer
  • Balance<br> Fe(s) + Ca(NO3)2(aq)-&gt;
    8·1 answer
  • _____of gas molecules with an object is the cause of<br> pressure by a gas.
    7·2 answers
  • When writing a chemical equation, what does the symbol (s) after a chemical formula indicate?
    9·1 answer
  • Diamonds and graphite are two forms of what nonmetal?.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!